Jane Street’s Tectonic Therapeutic TECX Stock Holding History

Jane Street’s Portfolio TECX Stock Details TECX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$2.13M	Buy	+69,000	New	+$1.7M	﹤0.01%	4961

Other funds holding TECX

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

TCM

TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return

Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Braidwell Stamford, Connecticut $3B AUM 46.72% 1-Year Est. Return

FLAM

First Light Asset Management Edina, Minnesota $1.12B AUM 114.45% 1-Year Est. Return

BBA

Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return

5VM

5AM Venture Management San Francisco, California $360M AUM 345.76% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPC

Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return

Jane Street's TECX Position: Q1 2026 in Review

Jane Street sold out of Tectonic Therapeutic (TECX) in Q1 2026, closing a stake of 19,321 shares — an estimated $475K sold.

Jane Street first reported a position in TECX in Q3 2020 and held it in 7 quarters. The position peaked at $1.37M in Q4 2024. 111 funds tracked by Wall St. Rank hold TECX as of Q1 2026.

Jane Street reported no remaining Tectonic Therapeutic position as of Q1 2026 after selling out during the quarter.
Jane Street sold 19,321 Tectonic Therapeutic shares in Q1 2026, an estimated $475K.
Jane Street first reported a position in Tectonic Therapeutic in Q3 2020 and held it in 7 quarters.
Jane Street's Tectonic Therapeutic position peaked at $1.37M in Q4 2024.
111 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.